| Sources of energy | Advantage (s) | Disadvantage (s) |
| Wind |
abundant safe |
not always available |
| Solar |
renewabale safe clean plentiful |
expensive |
| water/hydro |
clean safe unlimited |
expensive not available |
| biogas |
renewable available clean, safe |
hamful polluting |
| nuclear |
renewable clean |
expensive dangerous |
| coal/oil/natural gas | abundant |
hamful exhaustible polluting |